CN212848603U

CN212848603U - Hard-shell button cell

Info

Publication number: CN212848603U
Application number: CN202021802002.XU
Authority: CN
Inventors: 胡常青; 赵明; 罗强
Original assignee: Zhuhai Hange Energy Tech Co ltd
Current assignee: Zhuhai Hange Energy Tech Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-03-30
Anticipated expiration: 2030-08-25

Abstract

The utility model relates to the technical field of button cell batteries, in particular to a hard shell button cell battery, which comprises a first shell with a first accommodating groove, an electric core arranged in the first accommodating groove and a second shell covered on the first shell, wherein a first sealing glue is arranged on the connecting surface between the first shell and the second shell; the utility model discloses an electric core is placed to first casing with first storage tank, second casing lid is established on first casing and seal and guarantee the insulating nature between first casing and the second casing in to first storage tank through first glue, this crust button cell has simple structure, the small advantage of battery, and electric core is placed in first storage tank, guarantee through the pressfitting force between first casing and the second casing that electric core does not rock in first storage tank, guarantee the security that the battery used, and what the volume of electric core can be done is great, increase the capacity of battery.

Description

Hard-shell button cell

Technical Field

The utility model relates to a button cell technical field especially relates to a crust button cell.

Background

The existing button cell has the problems of complex structure, large processing difficulty and large cell volume, which causes low capacity.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a hard shell button cell, which has the advantages of simple structure, small battery volume and large battery cell capacity.

The utility model provides a technical scheme that its technical problem adopted does: a hard shell button cell comprises a first shell with a first accommodating groove, a cell arranged in the first accommodating groove and a second shell covering the first shell, wherein the first shell and the second shell are made of conductive materials, and a first sealing adhesive is arranged on a connecting surface between the first shell and the second shell.

Furthermore, a second accommodating groove is formed in the second shell, the height of the battery cell is larger than the depth of the first accommodating groove, the second shell is covered on the first shell, and part of the battery cell is arranged in the second accommodating groove.

Further, the maximum outer diameter of the first housing is greater than the maximum outer diameter of the second accommodating groove, and the maximum outer diameter of the second housing is greater than the maximum outer diameter of the first accommodating groove.

Further, the maximum outer diameter of the first housing is equal to the maximum outer diameter of the second housing.

Further, two tabs of the battery cell are respectively connected with the first shell and the second shell.

Furthermore, the two tabs are respectively and fixedly connected with the bottom of the first accommodating groove and the bottom of the second accommodating groove.

Further, the first sealing compound has a connecting portion located in a connecting seam between the first housing and the second housing, and a sealing portion located on outer walls of the first housing and the second housing and covering the connecting seam.

Further, the thickness of the sealed portion increases from both ends toward the center.

Furthermore, a second sealant is injected into the first shell and/or the second shell.

Furthermore, the first sealant and the second sealant are integrally formed.

The beneficial effects of the utility model are that: the utility model discloses an electric core is placed to first casing with first storage tank, second casing lid is established on first casing and seal and guarantee the insulating nature between first casing and the second casing in to first storage tank through first glue, this crust button cell has simple structure, the small advantage of battery, and electric core is placed in first storage tank, guarantee through the pressfitting force between first casing and the second casing that electric core does not rock in first storage tank, guarantee the security that the battery used, and what the volume of electric core can be done is great, increase the capacity of battery.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic cross-sectional view of a hard-shell button cell according to an embodiment of the present invention;

fig. 2 is an assembly schematic diagram of a hard-shell button cell of an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 and 2, a hard shell button cell includes a first casing 100 having a first receiving groove 101, a cell 300, and a second casing 200 having a second receiving groove 201, where the first casing 100 and the second casing 200 may be circular or square, the first receiving groove 101 and the second receiving groove 201 may also be circular or square, the first casing 100 and the second casing 200 are made of conductive material, and are usually made of conductive metal, such as copper, aluminum, copper aluminum alloy or alloy steel, etc., the cell 300 has two tabs 301, the two tabs 301 are a positive tab and a negative tab respectively disposed at two ends of the cell 300, the cell 300 is disposed in the first receiving groove 101, and one tab 301 is electrically connected to the first casing 100, the second casing 200 is covered on the first casing 100 and makes the other tab 301 electrically connected to the second casing 200, the second casing 200 is covered on the first casing 100, the connection face between first casing 100 and the second casing 200 is provided with first glue 400 of gluing, and this first glue 400 of gluing can realize the insulating effect between first casing 100 and the second casing 200 to guarantee the leakproofness of first storage tank 101 and second storage tank 201, the utility model discloses a crust button cell has simple structure, advantage with low costs, and electric core 300 all can be placed with second storage tank 201 to electric core 300 can accomplish as big as possible under the prerequisite that does not increase overall dimension, promotes the capacity of battery, and under the prerequisite of guaranteeing battery capacity, has and to do the battery littleer.

In some embodiments, the height of the battery cell 300 is greater than the groove depth of the first receiving groove 101, and the height of the battery cell 300 is less than the sum of the groove depth of the first receiving groove 101 and the groove depth of the second receiving groove 201, so as to ensure that the battery cell 300 can be stably placed in the area between the first casing 100 and the second casing 200.

In some embodiments, the maximum outer diameter of the first casing 100 is greater than the maximum outer diameter of the second receiving groove 201, and the maximum outer diameter of the second casing 200 is greater than the maximum outer diameter of the first receiving groove 101, so that the open end surfaces of the first casing 100 and the second casing 200 are abutted and sealed and connected by the first sealant 400, thereby increasing the volume of the inner cavity formed between the first receiving groove 101 and the second receiving groove 201, enabling the first casing 100 and the second casing 200 to receive the battery core 300 with a larger volume, and increasing the capacity of the battery.

In some embodiments, the maximum outer diameter of the first casing 100 is equal to the maximum outer diameter of the second casing 200, and in this embodiment, the assembled battery is in a round cake shape or a cylindrical shape, and has a regular shape and wide applicability.

In some embodiments, the two tabs 301 are fixedly connected to the bottoms of the first receiving groove 101 and the second receiving groove 201, and the fixed connection may be welding, so as to ensure stable electrical connection between the battery cell 300 and the first casing 100 and the second casing 200, and the first casing 100 and the second casing 200 are mutually covered, and the tabs 301 are further disposed between the battery cell 300 and the first casing 100 and the second casing 200, so that the battery cell 300 is prevented from striking the first casing 100 or the second casing 200 when the battery cell 300 is severely shaken by using the tabs 301 as a buffer.

In some embodiments, the first sealant 400 has a connecting portion 401 and a sealing portion 402, the connecting portion 401 is located in a connecting seam between the first casing 100 and the second casing 200, and the sealing portion 402 is located on outer walls of the first casing 100 and the second casing 200 and covers the connecting seam, where it should be noted that the connecting seam in this embodiment is a seam of the connecting surface between the first casing 100 and the second casing 200, that is, the connecting portion 401 blocks a direct contact between the first casing 100 and the second casing 200, and the sealing portion 402 blocks a seam between the outer wall of the first casing 100 and the outer wall of the second casing 200, so as to perform a sealing function.

In some embodiments, the thickness of the sealing portion 402 is gradually increased from the two ends toward the center, so that the two ends of the sealing portion 402, which are away from the connecting seam, can be tightly attached to the outer walls of the first casing 100 and the second casing 200, thereby improving the sealing performance, and the sealing portion 402 is in arc transition with the outer walls of the first casing 100 and the second casing 200, thereby avoiding the sealing portion 402 from tilting from the outer wall of the first casing 100 or the second casing 200 due to repeated assembly and disassembly, and thus, the sealing performance is not affected.

In some embodiments, a second sealant is injected into the first casing 100 and/or the second casing 200, that is, the battery cell 300 is fixed in the first receiving groove 101 and the second receiving groove 201 by the second sealant, so as to prevent the battery cell 300 from shaking relative to the first casing 100 and the second casing 200, and further, the first sealant 400 and the second sealant are integrally formed, that is, the sealant is injected inwards through the connecting surface between the first casing 100 and the second casing 200.

In some embodiments, the end surface of the connection between the first casing 100 and the second casing 200 is provided with a mesh or is provided with a matching groove shape, which aims to increase the contact area between the first casing 100/the second casing 200 and the first sealant 400, and further improve the sealing performance.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. The hard-shell button cell is characterized by comprising a first shell (100) with a first accommodating groove (101), a cell (300) arranged in the first accommodating groove (101), and a second shell (200) covered on the first shell (100), wherein the first shell (100) and the second shell (200) are both made of conductive materials, and a first sealing adhesive (400) is arranged on a connecting surface between the first shell (100) and the second shell (200).

2. A hard-shell button cell battery according to claim 1, characterized in that the second housing (200) has a second receiving groove (201), the height of the cell (300) is greater than the groove depth of the first receiving groove (101), the second housing (200) is covered on the first housing (100) and a part of the cell (300) is disposed in the second receiving groove (201).

3. A hard-shell button cell according to claim 2, wherein the maximum outer diameter of the first housing (100) is larger than the maximum outer diameter of the second receiving groove (201), and the maximum outer diameter of the second housing (200) is larger than the maximum outer diameter of the first receiving groove (101).

4. A hard-shell button cell according to claim 2, wherein the maximum outer diameter of the first casing (100) is equal to the maximum outer diameter of the second casing (200).

5. Hard-shell button cell according to claim 2, characterized in that two tabs (301) of the cell (300) are connected to the first casing (100) and the second casing (200), respectively.

6. A hard-shell button cell according to claim 5, wherein two of said tabs (301) are fixedly connected to the bottom of said first receiving groove (101) and the bottom of said second receiving groove (201), respectively.

7. The hard-shell button cell of claim 1, wherein the first sealant (400) comprises a connecting portion (401) and a sealing portion (402), the connecting portion (401) is located in a connecting seam between the first casing (100) and the second casing (200), and the sealing portion (402) is located on an outer wall of the first casing (100) and the second casing (200) and covers the connecting seam.

8. A hard-shell button cell according to claim 7, wherein the thickness of the sealing portion (402) increases from the ends towards the center.

9. The hard-shell button cell of claim 1, wherein the first housing (100) and/or the second housing (200) is encapsulated with a second encapsulant.

10. The hard-shell button cell of claim 9, wherein the first encapsulant (400) is integrally formed with the second encapsulant.